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Finding the Fourth Proportional to 64,710.60, 97,079.70 and 36,643.80

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Solution

The fourth proportional to 64,710.60, 97,079.70 and 36,643.80 is: 54,973.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,710.60 : 97,079.70 = 36,643.80 : x
  2. Step 2: Convert to fraction form
    64,710.60/97,079.70 = 36,643.80/x
  3. Step 3: Cross multiply
    64,710.60x = 97,079.70 × 36,643.80
  4. Step 4: Simplify right side
    64,710.60x = 3,557,369,110.86
  5. Step 5: Solve for x
    x = 3,557,369,110.86/64,710.60
  6. Step 6: Final answer
    x = 54,973.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.